Akuma no Riddle is a suspenseful action anime and manga series set in Myoujou Academy, where a class of assassins is tasked with killing one target—a mysterious girl named Haru Ichinose. The story follows Tokaku Azuma, an assassin who eventually decides to protect Haru instead. The series is notable for its tense atmosphere, character-driven narrative, and yuri undertones. It explores themes of trust, betrayal, and personal redemption.